Hounen Solar vs Trina Solar - solar panel manufacturer comparison
Trina Solar has the broader catalog (340 vs 44 models). Trina Solar leads on peak efficiency at 24.80%. Hounen Solar leans bifacial (86% of lineup).
Both catalogues are read from the manufacturers' own datasheets. A brand is not scored against the market here, only against the other brand on this page.
The two companies
Hounen Solar (Zhejiang Haoneng Optoelectronics) is a Chinese solar PV module manufacturer with its U.S. operations branded as Hounen Solar America. The company produces solar panels for residential, commercial, and utility-scale applications, and in 2023 established a 1 GW module assembly facility in Orangeburg, South...
- Founded
- 2010
- Headquarters
- Haining, China
- Annual capacity
- 1-2 GW/year
- Employees
- 200-500
- Founded
- 1997
- Headquarters
- Changzhou, China
- Tier 1 bankable
- Yes
Catalogue against catalogue
An average over a catalogue describes the range a manufacturer publishes, not the module you would buy. A brand with two flagship panels and eighty older ones averages worse than one that has retired its back catalogue.
What each of them builds
Trina Solar skews to higher efficiency: 22% of lineup is 23%+
Hounen Solar offers more 600W+ panels (43% of lineup)
Dominant cell tech: <strong>N-type</strong> (48%)
Dominant cell tech: <strong>TOPCon</strong> (73%)
The flagships
Written summary
Hounen Solar is a Chinese-origin manufacturer - its parent company is Zhejiang Hounen Photoelectric Co. Ltd. - that established a U.S.-based assembly operation in Orangeburg, South Carolina, in 2022. The facility represents a roughly $33 million investment with approximately 1 GW of nameplate production capacity. Hounen Solar America was formally incorporated in late 2022, making it a relatively young entrant to the North American market. No BNEF Tier 1 or bankability listing was found for the brand at the time of writing. Trina Solar, by contrast, was founded in 1997 and is headquartered in Changzhou, China. It has achieved BloombergNEF Tier 1 bankability recognition eight times as of 2025 - including a 100% unanimous bankability score - and has accumulated over 292 GW of cumulative module shipments worldwide as of mid-2025. On institutional footprint alone, Trina Solar holds a commanding advantage.
Hounen Solar's U.S. lineup spans bifacial panels in the roughly 400 W to 720 W range and is primarily positioned for residential and commercial rooftop buyers who value domestically assembled product - particularly relevant given U.S. tariff dynamics. The company's catalog has been associated with PERC cell technology. Trina Solar's portfolio centers on its Vertex product families: the Vertex S+ targets commercial and space-constrained rooftop applications up to around 485 W, while the Vertex N line employs n-type TOPCon cells and extends to 760 W modules with efficiencies reaching 24.5%, aimed squarely at utility-scale ground-mount projects. Trina also carries 30-year performance warranties on flagship models, which is above the industry norm.
For most buyers in 2025, Trina Solar is the lower-risk default: its long track record, bankability with lenders, broad installer network, and proven TOPCon technology make it easier to finance and insure on larger projects. Hounen Solar is a reasonable alternative specifically for U.S. buyers who need tariff-exempt, domestically assembled panels and are working within a budget - but it should be evaluated with the understanding that it is a newer brand without the same institutional validation.
Generated by Claude Sonnet · 2026-06-10
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Comparisons are computed from manufacturer datasheets held in the ComparePV database and may not reflect a brand's complete current lineup. Nothing on this page is paid placement.